中考英语作文保护动物(热门20篇)
导语:可以说,万里长城就是中民族两千多年发展中的历史见证者,它目睹了中华民族的荣辱与兴衰,它见证了中华民族的复兴与强盛。因此,万里长城是我们的无价之宝,下面是开学吧小编为大家整理的相关论据素材,欢迎阅读与借鉴,谢谢!
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1000加强保护野生动物建议书作文
全文共 862 字
+ 加入清单您们好!
自古以来,动物就是人类的朋友,它们心甘情愿的为人类所奴隶,可是,我前些天在网上看到的一组让人触目惊心的图片却令我久久不能平静。
在各大商场李,狐皮包、虎皮大衣、鳄鱼皮皮鞋、手提包总是最耀眼的奢侈品。在各大餐馆中,往往不难看到桌上是熊掌、蛇肉、后脑等野味。在许多人看来,这只不过是一件件豪华的大衣、精美的奢侈品,是一席席美味的宴席,可是,你们可曾想过它们也是一条条鲜活的生命啊!我看见这些东西,就仿佛看见了一双双沾满鲜血的双手,更是看见了未来因缺少动物资源而一片荒芜的大地;仿佛听到了一声沉闷的枪声过后一只只动物倒地的闷响和随之而来的惨烈的叫声……这难道就是人类对待朋友的态度吗?
现在,有许许多多的人认为:”动物不是多得很吗?随便猎杀一、两只会有什么问题呢?”可是,如果人们肆无忌惮的猎杀,多少动物都会被捕杀殆尽的,不是吗?就拿旅行鸽来说吧,只怕是现在好多同学都没听说过这种鸽子呢,就在上个世纪,它还是成百上亿只,据说,当时举起木棍在天空中挥舞几下就会打下几只来,可就是这么一种不可计数的鸟儿,却因为其鲜美的肉质而屡屡遭到人类的捕杀,在短短十几年中,旅行鸽的数量居然从几亿锐减到一只!这个惨痛的教训,难道还不足以唤起人们保护动物的决心吗?
在此,我向动物保护协会的工作人员提出几条建议:
1、通过各大媒体大力宣传保护动物的紧迫性,粘贴标语,唤起人们保护动物的决心!
2、对偷猎者加以管制,在各个自然保护区设专门的机构严加看守,如果发现偷猎行为,应没收作案工具并予罚款,严重者可处五年以上有期徒刑。
3、严查各个餐馆、商场售卖野生动物制品的情况,并贴出保护野生动物的标语,严禁收买野生动物制品,并不定时检查,如果发现,便可处以罚款,发现三次以上,便可做停业处理。
4、提倡人们多保护动物,并给予举报偷猎者的人以经济、物质奖励。
请各位领导在百忙之中抽出一点时间来看一看我这个小学生写的建议书吧,希望您们接受我的建议,号召人们主动保护野生动物!
建议人:xxx
20xx年11月9日
[加强保护野生动物建议书作文
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篇1:中考英语满分作文
全文共 490 字
+ 加入清单My school life is very interesting and happy. I like English best of all the subjects in the school. Because it can make me know something new about the world and make friends with a lot of foreigners. I often play basketball with my classmates at school and surf the Internet at home . I will study hard at other subjects from now on in order that I can enter a better high school.
我的学校生活是非常有趣和快乐。我最喜欢英语在所有的科目在学校。因为它能让我知道一些新的关于世界和结交了很多的外国人。我经常在学校和在家里上网,我的同学们打篮球。我会努力学习其他科目从现在开始,我可以进入一个好的高中。
篇2:保护动物作文200字四:保护动物
全文共 232 字
+ 加入清单青蛙它是两栖动物。它生活在水里,或在靠近水边的地方。它专门吃田里害虫。它是农作物的“忠诚卫士”,是天然的捕虫机。一只青蛙平均一天吃70只害虫,一年能吃掉15000条害虫。
蜻蜓也很厉害。一只蜻蜓一个小时能吃20个蝇子或840只蚊子,真令人惊讶!
燕子就更厉害了,它一只燕子一个夏天就能吃掉50万条害虫,燕子真是人类的好帮手!
蜜蜂可以给我们人类带来甜甜的蜜,它也对我们有益的,我们要保护它。
地球上的有益动物,我们都要保护它们。
篇3:写濒临危机动物的英语作文北极熊
全文共 1540 字
+ 加入清单A triple bacon cheeseburger seems like a heart attack on a plate.
三层奶酪咸肉汉堡感觉吃完很容易让人突发心脏病。
So how can polar bears thrive on their version, seal blubber?
那么,北极熊是如何处理这些高热量食物的呢?
Turns out theyve stocked up on genes that let them clear fats from their blood.
结果显示它们储存在遗传基因里的信息使得它们能够清除血脂。
Thats according to a study in the journal Cell.
这是根据《细胞》杂志上的一篇研究得出的结论。
Polar bears are well adapted to life on the sea ice.
北极熊非常适应在浮冰上的生活。
Up to half their body weights fat, which gives them extra insulation and buoyancy, and provides them with a ready source of energy.
几乎占它们身重一半的脂肪足以使它们保暖并且维持体力,提供给它们一种易转化的能量。
But how can an animal so fat also be so fit?
但一种动物怎么能又胖又健康?
Researchers compared the genomes of polar bears with those of brown bears, and found that polar bears have accumulated genetic changes that boost their heart health and fat metabolism.
研究人员们通过比较北极熊和棕熊的基因,发现北极熊的基因组中积累了不少有利于心脏健康和脂肪代谢的遗传突变。
One gene in particular, called ApoB, helps move cholesterol out of the blood—where it causes problems in humans—and into cells.
特别是编码为载脂蛋白B的基因有助于清除血液中对人类有害的胆固醇转变成细胞代谢。
These genomic changes happened quickly, evolutionarily speaking.
这些遗传变化从进化的角度来讲发生的十分快。
Polar bears and brown bears diverged from a common ancestor less than half a million years ago.
北极熊和棕熊都来自于同一个祖先,它们是在大约50万年前左右开始向不同分支进化。
But if that seems super speedy, the ability to digest lactose didnt spread through human populations until we domesticated cows, just 10,000 years ago.
但是如果这种变化看上去十分快速的话,消化乳糖的酶逐渐进化到人类各个种群中也还是发生在大概1万年前我们可以驯化乳牛之后。
A moooving testament to the power of natural selection.
这是自然选择力量的证明。
篇4:中考英语-作文范文:ThespringFestival
全文共 1281 字
+ 加入清单春节习俗与计划,如何过2009年的春节,假如你是LINGLING给外国朋友JHON发一份电子邮件。
The spring Festival
Dear Jhon :
The Spring Festival is the most important festival in China. It is on January 1st according to the Chinese lunar calendar(中国的农历). It’s China’s New Year’s Day. So usually a month before the festival people begin to buy food clothes and decorations(装饰) for houses.
About a week before the festival housewives are busy preparing the new year dinner. And they will do a lot of washing and cleaning in the houses. People who are far away on business are hurrying to return home for the new year’s family reunion(团聚).
On New Year Eve each family will gather tighter eating talking and watching TV for almost the whole night. And there will be some interesting programmes on TV. The children are the happiest of all because they can get presents from parents or grandparents.
On Lunar New Year’s Day after getting up people will eat dumplings. When they meet their neighbours or friends they’ll say: “Happy New Year!”
I am ready to spend with together my family on the Spring Festival I’am going to see my grandparents and friengs . I ’m going to Diseyland in HONGKONG with my parents I will revise lessinos do exercise every day help the old and children .Wellcom to China. Waiting for your e -mail.
Yours
Lingling
篇5:三年级英语动物日记
全文共 327 字
+ 加入清单Animals are our friends, they live together with us on the same planet, we should take care and protect them, and they let us know we do not know many of the knowledge.
When we want to animal fur and all the time, until you want to protect you when they have been cruel extinction, and animal protection is to protect ourselves.
篇6:保护动物的英语
全文共 1629 字
+ 加入清单A thought-provoking dialogue between the mother elephant and her own child appears in the first picture. Having growing his teeth, the young elephant is eager to share the exciting news with his mother. However, after repeating his words several times, there is still no response coming from the mother. Meanwhile, the attractive caption in the second photo reads: no trade, no kill.
The above pictures unveil a hazard posed to wildlife due to the expanding scale of world commercial hunting. At least two fundamental factors could contribute to this phenomenon. The industry of commercial hunting have undergone a booming expansion (along with the growing public awareness of the merits of wildlife, which makes/), making hunting unusually profitable. Worse still, lacking knowledge regarding the significance of ecological balance, some people take the gun to chase animals insatiably (and thus cause a severe threat to all life in the world). Apparently, this trend will surely in turn endanger humankind in the long run.
(On no account should we turn a blind eye to such things.//All these factors above make it crucial to take drastic measures to protect the wildlife.) Accordingly, governments all over the world are supposed to unite to work out effective measures against commercial hunting. Additionally, people should be educated from childhood to cultivate the awareness that we and the rare wild animals share the same precious planet. I do believe a harmonious relationship between the wildlife and human beings is awaiting us if we make every effort to promote wildlife protection both nationally and internationally.
篇7:中考英语作文:TeachingChildren
全文共 838 字
+ 加入清单We often hear that different methods to teach children will have different result. And different children adapt different methods. Luckily, I think my parents’ teaching method fits me very much and I am glad to have such parents. They are my friends. We often talk and play together. They often tell me to be a kind-hearted person by words and they also act in that way. If they find that I have any wrong thought, they will try to correct it in a gentle way. If they find me do the same wrong thing again and again, they will criticize me badly, which makes me do not dare to do it next time. And nobody will speak for me.
我们常常听说教育孩子不同的方法会有不一样的结果。不同的孩子适合不一样的方法。幸运的是,我觉得我父母的教学方法非常适合我,我很高兴有这样的父母。他们是我的朋友。我们经常一起聊天一起玩。他们经常告诉我要做一个善良的人,他们也用行动证明了。如果他们发现我有任何不良的思想,他们会温和地纠正。如果他们发现我多次还犯同样的错误,他们就会重重地批评我,让我不敢再做第二次。也没有人会为我说话。
篇8:英语作文怎样做到保护环境
全文共 1309 字
+ 加入清单There is no doubting the great benefits which scientific advances have brought us 。 Yet we have become increasingly aware that some technologies’ developing brings unexpected and harmful side effects 。
A number of factories spring up like mushrooms ,exhausting much waste gas , which leads to the greenhouse effect and air pollutions 。 Plentiful trees are cut down that causes the lands to change into the deserts 。 At the same time , varieties of species are gradually extincting 。 These phenomenons give us clear warnings of the dangers of failing to live harmony with nature 。
We ought to set up a profound mind to protect our environment 。 For the governments ,they should make detail laws and policies to observe the behaviors of destroying the environment 。 Factories should exhaust polluted water or gas after dealing with rather than merely pursue the economic interests 。 Planting as more as possible trees , in case of the water and soil erosion 。 For farmers , they must reduce spraying the insecticides 。 We also must make less use of plastic materials and one—off products 。 In addition , we wouldn’t throw the rubbish anywhere 。 Thus , we at least can maintain our environment in a good state 。 However , that’s not enough 。 We are supposed to work harder to protect our environment 。
篇9:作文保护动物100字
全文共 202 字
+ 加入清单今天下午,妈妈给我买了两只小鸭子,小鸭子浑身毛绒绒的,嘴巴扁扁的,走起路来一摇一摆,很惹人喜爱。
我把它们放到奶奶家的菜地里,让它们淋浴春天的阳光。它们在前面跑,我兴冲冲的跟在后面。一不小心,我踩到一只小鸭子的身上,它顿时躺在地上一动不动,肠子从肚子里流了出来,伸了伸腿就死去了。由于我的不小心,使小鸭子的生命在一眨眼的功夫就消失了,我很伤心,但也无济于事。以后我一定事事小心谨慎,珍爱生命,保护好小动物。
篇10:保护动物的英语
全文共 635 字
+ 加入清单there are many kinds of animals in the world,but not only the humans.we live in the same world,and we should be friends.as everybody knows,the humans are the rulers of the world today,so we should protect our friends--the animals!
but how to protect them?as first,i think we must stop killing the rare birds and animals,especially the young ones.the second,we have to protect the environment,to make the sky blue,to make the grass green,to give the animals a comfortable space to live.it`s not only for the animals but also ourselves.the last,we should tell more and more people why and how to protect the animals,make everyone do this.
篇11:保护环境英语带翻译
全文共 1061 字
+ 加入清单Serious Floods
The Yangzte River is the longest river in China. And its important and helpful to us Chinese. But these days the Yangtze River is bringing us serious floods.
Many villages were destroyed by floods. The floods made hundreds of millions of people lose their homes, relatives and friends. Many children cant go to school as usual .Now the foods have drawn the attention of the whole world. People from abroad have offered their help too. In China, millions of soldiers are busy fighting against the floods. They are working very hard. Many of them have lost their lives in their attempt to save the villagers.
Though we cant help them to fight against floods, we should help them to rebuild their homeland. We can present them our pocketmoney and clothes. I believe most of the people will return to their homeland in the near future.
严重的水灾
长江是中国最长的河流。它对我们中国人十分重要。但现在长江给我们带来了严重的水灾。
许多村庄被洪水冲毁于。洪水使成千上万的人失去了家园,亲戚和朋友。许多孩子不能与平常——样去学校了。现在洪水引起了全球的注意。国外的人也给予了援助。在中国,上百万的战士忙于与洪水搏斗。他们努力工作,许多人在救村民时献出了自己的生命。
尽管我们不能帮助他们抗洪,但我们可以帮他们重建家园。我们可以捐出零花钱和衣服。我相信在不久的将来大多数人会回到家乡。
篇12:保护熊猫英语作文
全文共 810 字
+ 加入清单Panda is our country’s treasure,we should protect it.nowadays,we see from the TV that panda is less than before,it is not only because of the damage of the environment,but also the weakness of the panda.Everybody loves panda,it is so lovely,a panda has two black eyes,it is very lazy,it likes sleeping all the time.When we see its round body shape,we can’t help loving them.In order to see the lovely animal,we need to protect them.We must protect the environment,like not to throw the rubbish away,not to cut down the trees.We condemn such behavior that killing the animals.Protecting the animals is everybody’s job.
熊猫是我们国家的珍宝,我们应该保护它。现在,我们可以从电视上看到熊猫比以前少,这不仅因为环境的破坏,还因为熊猫自身的脆弱。
大家都喜欢熊猫,它很可爱,熊猫有两只黑色的眼睛,很懒,总是在睡觉。当我们看到熊猫圆圆的身形时,忍不住喜欢它们。
为了看到这些可爱的动物,我们需要保护它们。
我们必须保护环境,比如不随处扔垃圾,不砍伐树木。我们谴责杀动物的行为。保护动物,人人有责。
[怎么保护熊猫英语作文
篇13:中考英语满分作文努力
全文共 1211 字
+ 加入清单As we all know, our life is full of challenges as well as opportunities. Every one of us expects to be successful and deserve others’ respect. In my opinion, the key to success is that we should manage to make the most of what we’ve already had.
When I was a child, I am fond of making things by hand. At one time, I took part in a hand-made activity in our school. I wanted to make a model house as I usually did, but suddenly I found the materials that I had weren’t enough. Faced with such a situation, I really wanted to give up. However, after a second thought, I thought of an idea to pide some of the materials into small parts and I finally succeeded in making a special model plane. To my great joy, I was given the first prize because of my creativity.
After that, I understand whenever we face trouble, it is no use complaining. We should try our best to make use of what we have already had to solve problems.
我们都知道,我们的生活充满了挑战和机遇。我们中的每一个人都希望获得成功,并得到别人的尊重。在我看来,成功的关键在于我们应该设法使我们所拥有的。
当我还是个孩子的时候,我喜欢用手做东西。有一次,我参加了一个手工制作的活动在我们学校。我想做一个模型房子,我通常做的,但突然发现我的材料是不够的。面对这样的情况,我真的很想放弃。然而,经过一次思考,我想到了一个想法把一些材料分成几个小部分,最后我成功地制作了一个特殊的模型飞机。我非常高兴,因为我的创造力,我得到了第一个奖。
之后,我明白每当我们面对麻烦,抱怨是没有用的。我们应该尽我们最大的努力去利用我们已经解决的问题。
篇14:中考英语作文:创建文明城市
全文共 1191 字
+ 加入清单导语:你觉得创建文明城市的首要条件是什么?下面是yuwenmi小编为大家整理的优秀英语素材,欢迎阅读与借鉴,谢谢!
为配合我市开展“创建文明城市(build a civilized city)”活动,学校举办以How to Behave Well?为主题的英语征文比赛。现在请你根据所给提示内容,用英语写一篇80词左右参赛短文。
提示:1.衣着整洁;2.保持环境卫生;
3.待人有礼,乐于助人; 4.遵守交通规则; 5…….
要求:1.文章必须包括所给提示中1~4项内容,可展开思路,适当发挥;
2.文中不能出现考生的真实姓名、校名等。
In order to build a civilized city, we students should try our best to behave well in the activities.
It’s a good habit to keep our clothes clean and tidy. Our city should be kept clean every day. Don’t throw litter or spit about. It’s good manners to say “Thank you” and “Please”, and so on. We should never say dirty words. Be friendly to others and always ready to help the people in need. For example, when we are on a bus, we should give our seats to the old and the women with babies. We should also obey traffic rules. When the traffic lights are red, we should stop. And we’d better not talk or laugh loudly in public.
If everyone behaves well , our city will be more beautiful and more attractive.
【参考译文】
为了建设文明城市,我们学生应该尽力在活动中表现良好。
保持衣服干净整齐是一个好习惯。我们的城市应该每天保持清洁。不要乱扔垃圾或随地吐痰。说“谢谢”和“请”是礼貌的,等等。我们不应该说脏话。对别人友好,随时准备帮助需要帮助的人。例如,当我们在公共汽车上时,我们应该给老人和有婴儿的妇女让座。我们也应该遵守交通规则。当交通灯是红色的时候,我们应该停下来。我们最好不要在公共场合大声说话或大笑。
如果每个人都表现良好,我们的城市将会更美丽更迷人。
篇15:以身体健康问题为话题的中考英语作文
全文共 657 字
+ 加入清单近年来,中小学生健康问题日益引起人们的关注。请你用英语就该问题谈谈你的看法。
要求:(1)内容包括①列举中小学生面临的健康问题。
② 请谈谈怎样才能保持健康。
(2)字数:60---80词。
(3)短文中不得出现你的真实姓名、学校名和地名。
范文:Every one wants to keep healthy today, especailly our students. But we dont pay attention to our health. Some of them go to school without breakfast in the morning. Some students and pupils play computer games or watch TV all day, espacially at the weekends. Many boys think it is cool to drink or smoke.
It is important for us to have good habbits. We should eat breakfast every morning. We can watch TV or play games for a short time, then have a rest. We also can take part in some clubs. I think it is necessary for us to keep healthy.
篇16:保护濒危动物的
全文共 619 字
+ 加入清单“重庆市大巴山动物园的珍惜濒危动物╠五只大熊猫患上了离奇绝症需送国外抢救治疗,请同学们伸出援助之手,帮助那正要踏进死神殿堂的动物们吧!”第三节课间休息时,广播里传出动员大家出动的号召。
听到广播号召,同学们三三两两在教室议论起来,这时,只见班长杜鑫走上讲台,大声对我们说:“同学们,保护珍惜动物是我们共同的责任,大家都把平时的零用钱捐献出来,为抢救大熊猫做一点贡献吧!”大家听了,齐声拥护。班长到座位上拿出笔记本,就开始纪录同学们捐款了。同学们一齐围了上来,手里拽着一元、二元、五元的钞票,争先恐后地递给班长。班长的周围被围得水泄不通,不停地收钱,记载,一会大颗的汗珠开始从太阳穴顺流而下,汗珠最后降落在等记的课桌上。
下午第一节课的上课铃响了,老师来到课堂看到了同学捐款的场面,静静地观看着,脸上露出了欣慰的笑意。捐款登记完了,老师对我们说:“一会儿,学校将要举行捐款仪式,我们到操场上集合,请大家遵守秩序。”
全校同学们都来到操场上,主席台中间矗立着一个捐款箱,校长简单介绍后开始进行捐款仪式。校长,老师们依次走到捐款箱,投进了捐款,各班的班干部也带着全体同学的心愿走上捐款席,用一张写着多少钱,捐款慢慢地投了进去,同学们默默地注视着,脸上充满了自豪。
“一年级一班捐款125元……五年级六班捐款145元……总收到捐款4千多元,感谢同学们的爱心!”校长宣读完毕,操场上响起热烈的掌声。
这次活动,让我感到,我们要充满爱心,因为只有爱能创造奇迹!
篇17:关于动物的英语作文
全文共 385 字
+ 加入清单I have a dog,his name is Joy.He is very lovely like other dogs.When he feels happy,he always wags his tail.When he wants to eat food,he often follows me until I give him something to eat.I really like him.When I feel sad,he often stays with me as if he knew why I was sad.Thanks to him,he puts me out of my misery,so that I can live happily.He let me know dogs are humans best friends.
篇18:保护动物的倡议书
全文共 603 字
+ 加入清单动物是人类的好朋友,好朋友是不能杀害的,我们应该竭力保护它们,何况现在它们已经越来越稀少了。
世界上有许多野生动物都濒临着灭绝的危险,这又是谁的错呢?人类,是人类!假如人类不去乱砍伐树木,动物们就不会“无家可归”;假如人类不对大自然下“狠手”,动物们也不会这么快消失的……人类吃野生动物,得了许多疾病;人类使一种动物灭绝,导致多种动物灭绝,人类也就受到印象。总之,肇事者是人类,最后的受害者也是人类。
在南京大屠杀中,许多被保护的羚羊惨遭厄运;现在东北虎的生存空间已经不够,人类破坏了它们的家园;大熊猫是人类皆知的动物,虽然它们过着“衣来伸手,饭来张口”的生活,可有谁能预测它们还能活多久呢?……种种“案件”表明罪魁祸首就是人类。
动物们是保护地球的一根根链条,就算它们不是珍稀动物、国家级保护动物,我们都有责任去保护它们,而不是破坏它们的生存空间。它们是支撑地球生命的铁环,如果这根铁环中少了一种动物,那链条随时可能断裂,人类也就随时会灭亡。到了那时,就算你再怎么有钱,再怎么有权,也挽回不了你的生命呀!小沈阳说的对:“钱乃身外之物”,你用你的钱财去吃野生动物的原因就是让别人知道你是大富翁。这样做就大错特错了,吃野生动物不仅对自己无利、对别人有害,国家还严刑惩罚呢!真是害人又害己呀!
让我们一起携手保护动物吧!它是地球母亲的孩子,同我们是姐妹,也是世界的一份子,还是我们的好朋友呢!你忍心杀害我们的好朋友吗?
篇19:写濒临危机动物的英语作文北极熊
全文共 3755 字
+ 加入清单When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bears spend the summer fasting. At least, thats whats supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So whats a hungry bear to do?
Scientists once thought that polar bears might survive by supplementing their pinniped diet by turning to terrestrial foods like snow geese, their eggs and caribou.
"Weve had this debate in the literature about whether terrestrial foods are nutritionally relevant to polar bears during the on-land season when the ice has melted."
University of Alberta biologist Nick Pilfold.
"And weve known for a long time, going back to research in the early 70s, even going to back to early explorer logs, that polar bears will consume terrestrial based foods. But the debate was always whether those foods actually add up, energetically." In other words, do these substitutes provide enough nutrition to make up for the lost seals?
To find out, Pilfold and his colleagues estimated the weight lost each day by polar bears in the wilds of western Hudson Bay during the ice-free season, when they could ostensibly be chowing down on terrestrial foods. Then they compared that to the weight lost by bears that are temporarily held in Manitobas Polar Bear Alert Program.
While captive, the bears do not eat. They drop about one kilogram each day. But the wild bears, who had access to the Arctic snack bar, lost the same amount of weight each day. The results are in the journal Physiological and Biochemical Zoology.
"Which is really saying that the terrestrial foods do not have dense enough energy to offset the mass loss. So this idea that bears can just switch from eating sea ice–based food to land food and thats going to help supplement against longer ice-free seasons, that really doesnt show up in the data."
The problem is that polar bears evolved to rely on the marine diet.
"The food on land is protein and carbohydrate based, and the food the polar bears really focus on is fat. Fat is the name of the game for these bears; theyre highly adapted to absorbing that fat into their system and putting it onto their body as body mass, so they can fast on it later on. And the only thing thats going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when theres sea ice."
Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, cant last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species survival in doubt.
北冰洋在秋季结冰以后,北极熊就会出发去寻求它们最喜欢的食物:富含脂肪的海豹和胡子海豹。海冰在夏季开始融化断裂。这使北极熊在夏季无法吃到美味的海豹,所以它们进入禁食期。至少,情况应该是这样。但是由于地球变暖,温暖的无冰季节越来越长。那饥饿的北极熊要怎么办?
科学家曾经认为,北极熊可能会转向陆地上的食物来补充它们对鳍足类动物饮食的需求,进而生存下去,这些陆地食物包括雪雁、雪雁蛋和北美驯鹿。
“文献中有过这类辩论,即在寒冷融化时陆地食物是否能满足北极熊的营养需求。”
尼克·皮尔福德是加拿大阿尔伯塔大学的生物学家。
“通过上世纪70年代初的研究,还有早期的探险者日志,我们很早以前就知道,北极熊会以陆地食物为食。但是辩论的焦点在于,这些食物是否能增加北极熊的能量。”换句话说,这些替代食物能否为北极熊提供足够的营养,弥补不能进食海豹带来的损失?
为了解开这个疑惑,皮尔福德及同事对西哈德逊湾荒野地区的北极熊在无冰季期间每天失掉的体重进行了估算,从表面上看,北极熊在这段时间食用了陆地食物。随后,他们将这一数据与通过马尼托巴北极熊预警计划暂时捕得的北极熊所失掉的体重进行了对比。
在被关期间,北极熊不吃东西。它们的体重每天大约下降1公斤。虽然野生北极熊能享用北极“小吃”,但是它们的体重每天也同样会下降1公斤。这一研究结果发表在《生理学和生化动物学》期刊上。
“显然结果表明,陆地食物不能为北极熊提供足以抵消大量损失的能量。所以,北极熊可以从食用海冰下面的食物转向食用陆地食物,并帮助它们对抗日益延长的无冰季这个观点,并没有在这项数据中得到证明。”
问题是,北极熊进化成了依靠海洋食物的动物。
“陆地食物以蛋白质和碳水化合物为基础,而北极熊需要的食物以脂肪为主。脂肪是这些熊真正需要的东西;它们高度适应的情况是,将脂肪吸收进它们的系统中,然后把这些脂肪放在身上以增加体重,这样它们之后就可以依靠这些脂肪来度过禁食期。唯一能提供给北极熊这种脂肪的就是海洋哺乳动物。但是它们只能在有海冰时食用到这些海洋哺乳动物。”
成年北极熊可以8个月不进食。但是小一些的未成年北极熊已经不再被哺育,它们必须要去猎食,可是它们不能在漫长的无冰季期间一直不进食。所以,随着北极地区变暖,较小的北极熊将会大批死亡。这使这些物种的生存成为问题。
篇20:六年级英语作文:保护环境
全文共 928 字
+ 加入清单导语:随着环境污染问题的严重加剧,越来越多人认识到保护环境的必要和重要性,下面是yuwenmi小编为大家整理的优秀英语作文,欢迎阅读与借鉴,谢谢!
Nowadays more and more people realize it`s necessary and important to protect the environment. Alsothere are some people who don`t pay attention to hygiene and they can`t stop littering the rubbish casually or spitting everywhere all the time.And in addition there are a few factories often cutting down the trees discharging chemicals and dirty water and so on.And it causes many problems like the Greenhouse Effect.If they do these day by day and our life will be harder and harderso we have to stop them. To stop them we can put up commonweal advertisements and tell them the detriment of destroying the environment.So we can start from now to make a beautiful life.
【参考译文】
如今,越来越多的人认识到环境保护的必要和重要性。同时,有些人整天都不注意卫生,而且他们不能停止乱扔垃圾或者随意,随地吐痰。此外,还有一些工厂经常砍伐树木,化学品和污水排放等。并导致像温室效应问题很多。如果他们现在这样做,我们的生活会越来越困难,所以我们必须阻止他们。阻止他们,我们可以贴公益广告,告诉他们破坏环境的危害。所以我们可以从现在开始做一个美好的生活。